Re: [Codenarc-user] new GMetrics rule about software stability?

[<chr...@wa...>]

That is quite interesting. I agree that could be a valuable metric. And 
GMetrics does seem like a reasonable place to put it.

Are you thinking that a heuristic would be based on relative comparison? 
Perhaps # commits versus average or beyond one standard deviation -- 
figure out a good way to determine "outliers" on the high side.

BTW, My intent was to switch back to working on GMetrics for a while and 
give that some attention. There is a long to-do list for that project as 
well. Sigh. Never enough hours in the day...

Chris

Hamlet DArcy <ham...@ca...> wrote on 01/25/2011 03:20:02 AM:

> Hi all, 
> 
> I ran across an interesting blog post this morning from Michael 
Feathers: 
> http://michaelfeathers.typepad.
> com/michael_feathers_blog/2011/01/measuring-the-closure-of-code.html
> 
> As a measure of risk, he graphed the number of version control 
> commits against each file in the codebase. A file at revision 3 is 
> less risky than a file at revision 300. The file at revision 300 is 
> a code smell because all changes filter through that file. 
> 
> I have long wanted to see metrics on this version control revision 
> number. A high number shows unstable code that, at a minimum, needs 
> extensive test coverage, and possibly refactoring. 
> 
> Do you think GMetrics is the place for this code? Could we produce 
> some sort of report showing the risk areas of a project based on 
> revision number? And could you define heuristics for a CodeNarc rule
> based on this info? 
> 
> Or perhaps a different open source project is a better fit for this 
> functionality. 
> 
> --
> Hamlet D'Arcy
> ham...@ca...
> 
> 
> 
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